tests/misc/nohup.sh

   1 #!/bin/sh
   2 # test nohup
   3
   4 # Copyright (C) 2003-2024 Free Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ nohup
  21
  22
  23 nohup sh -c 'echo stdout; echo stderr 1>&2' 2>err || fail=1
  24
  25 # Be careful.  The results of the above nohup command
  26 # change depending on whether stdin and stdout are redirected.
  27 if test -t 1; then
  28   test "$(cat nohup.out)" = stdout || fail=1
  29   if test -t 0; then
  30     echo 'nohup: ignoring input and appending output to 'nohup.out'\'
  31   else
  32     echo 'nohup: appending output to 'nohup.out'\'
  33   fi >exp || framework_failure_
  34 else
  35   # Here it should not even exist.
  36   test -f nohup.out && fail=1
  37   if test -t 0; then
  38     echo 'nohup: ignoring input' >exp
  39   else
  40     rm -f exp
  41   fi || framework_failure_
  42 fi
  43 echo 'stderr' >> exp || framework_failure_
  44
  45 compare exp err || fail=1
  46 rm -f nohup.out err exp
  47 # ----------------------
  48
  49 # Be careful.  The results of the following nohup command
  50 # change depending on whether stderr is redirected.
  51 nohup sh -c 'echo stdout; echo stderr 1>&2' >out || fail=1
  52 if test -t 2; then
  53   test "$(cat out|tr '\n' -)" = stdout-stderr- || fail=1
  54 else
  55   test "$(cat out|tr '\n' -)" = stdout- || fail=1
  56 fi
  57 # It must *not* exist.
  58 test -f nohup.out && fail=1
  59 rm -f nohup.out err
  60 # ----------------------
  61
  62 # Bug present through coreutils 8.0: failure to print advisory message
  63 # to stderr must be fatal.  Requires stdout to be terminal.
  64 if test -w /dev/full && test -c /dev/full; then
  65 (
  66   # POSIX shells immediately exit the subshell on exec error.
  67   # So check we can write to /dev/tty before the exec, which
  68   # isn't possible if we've no controlling tty for example.
  69   test -c /dev/tty && >/dev/tty || exit 0
  70
  71   exec >/dev/tty
  72   test -t 1 || exit 0
  73   returns_ 125 nohup echo hi 2> /dev/full || fail=1
  74   test -f nohup.out || fail=1
  75   compare /dev/null nohup.out || fail=1
  76   rm -f nohup.out
  77   exit $fail
  78 ) || fail=1
  79 fi
  80
  81 nohup no-such-command 2> err
  82 errno=$?
  83 if test -t 1; then
  84   test $errno = 127 || fail=1
  85   # It must exist.
  86   test -f nohup.out || fail=1
  87   # It must be empty.
  88   compare /dev/null nohup.out || fail=1
  89 fi
  90
  91 cat <<\EOF > exp || framework_failure_
  92 nohup: appending output to 'nohup.out'
  93 nohup: cannot run command 'no-such-command': No such file or directory
  94 EOF
  95 # Disable these comparisons.  Too much variation in 2nd line.
  96 # compare exp err || fail=1
  97 rm -f nohup.out err exp
  98 # ----------------------
  99
 100 touch k; chmod 0 k
 101 nohup ./k 2> err
 102 errno=$?
 103 test $errno = 126 || fail=1
 104 if test -t 1; then
 105   # It must exist.
 106   test -f nohup.out || fail=1
 107   # It must be empty.
 108   compare /dev/null nohup.out || fail=1
 109 fi
 110
 111 cat <<\EOF > exp || framework_failure_
 112 nohup: appending output to 'nohup.out'
 113 nohup: cannot run command './k': Permission denied
 114 EOF
 115 # Disable these comparisons.  Too much variation in 2nd line.
 116 # compare exp err || fail=1
 117
 118 # Make sure it fails with exit status of 125 when given too few arguments,
 119 # except that POSIX requires 127 in this case.
 120 returns_ 125 nohup >/dev/null 2>&1 || fail=1
 121 export POSIXLY_CORRECT=1
 122 returns_ 127 nohup >/dev/null 2>&1 || fail=1
 123 unset POSIXLY_CORRECT
 124
 125 Exit $fail